David_Gerard comments on Cryonics As Untested Medical Procedure - Less Wrong
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Except that the analogy is wrong: it's quite easy to destroy the information. In practice, writing random data to a modern hard disk leaves it unrecoverable.
So:
Why did the idea that hard drives (a completely different form of data storage, something specifically designed to retain data across a wide range of conditions) are hard to erase make you think that it was hard to erase data from brains?
Now that you know that it isn't hard to irrecoverably erase hard drives (even though they're designed to retain data), how does that affect the analogy with brains? Why?